<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
  
<div id="app">

  <!-- 如果没有绑定v-model则必须加上 name="sex" 进行单选库互斥 提交时name为key-->
  <label for="male">
    <input type="radio" id="male" value="男" v-model="sex"> 男
  </label>

  <label for="female">
    <input type="radio" id="female"  value="女" v-model="sex"> 女
  </label>


  <h2>你选择的性别是 {{sex}}</h2>
</div>

<script src="../js/vue.js"></script>
<script>
  const app = new Vue({
    el: '#app',
    data:
    {
      message: 'Hello World',
      sex: '男',
    },
    methods: 
    {
      
    }
  })  
</script>

</body>
</html>